feat(build): rework structure

src/main/resources/plugin.yml

@@ -0,0 +1,18 @@
+name: Nicko
+main: net.artelnatif.nicko.NickoBukkit
+version: 1.0-SNAPSHOT
+author: Ineanto
+api-version: 1.13
+softdepend: [ PlaceholderAPI ]
+depend: [ ProtocolLib ]
+commands:
+  nicko:
+    description: "Opens Nicko's GUI."
+    permission: nicko.admin
+permissions:
+  nicko.*:
+    default: op
+    children:
+      - nicko.use
+  nicko.use:
+    default: op